[ubuntu] Useful Shell Scripts

[dennismoore1]

Hello, these are a collection of shell scripts I have created and found very useful.

install-script - installs a shell script

mv $1 /usr/local/sbin/$1
chmod a+rwx /usr/local/sbin/$1

use:
install-script file

alph - alphabetizes a file

cat "$1" | sort > "$1"

use:
alph file

clndir - gets rid of pesky "file~" files

rm *~

use:
clndir directory/name

empty-trash - empties the trash bin

rm -rf ~/.local/share/Trash/

use:
empty-trash

delinux-disk - gets rid of .Trash directories on jump drive

sudo mv /media/$1/.* ~/.local/share/Trash/files/
empty-trash

use:
delinux-disk drive name

vidget - downloads youtube videos and names them
!IMPORTANT!
use the following code before using this script:

sudo apt-get youtube-dl

youtube-dl http://www.youtube.com/watch?v=$1
mv ~/$1.flv ~/Videos/$2.flv

use:
vidget video-roster-number desired name

for clarification or amendments on any of these just reply to this post.
Thanks Guys!

[shaggy999]

Here's a useful shell script I use:

#!/bin/bash
/etc/init.d/ntp stop
ntpdate ntp.ubuntu.com
/etc/init.d ntp start
hwclock --systohc

Just drop this in a file, name it whatever and set the execute bit and run it. I use a commandline-only system so this is pretty handy. Took me FOREVER to figure out that I need to shut off the ntp server to update manually.

[WRDN]

Good scripts. My only comment is that, in the "empty-trash" script, you only need to remove the Trash folder, and unless there are some files you do not own in your Trash folder, "sudo" is not required. When you next delete a file, the Trash folder is recreated.

[dennismoore1]

Could you please clarify WRDN?
I did not quite understand that.
I have tinkered with the script quite a bit.
And I am the only user on my system so I almost never include security.
Of course, I am deffinitly no master.
I am open to your suggestions.

[WRDN]

Originally Posted by dennismoore1 Could you please clarify WRDN? I did not quite understand that. I have tinkered with the script quite a bit. And I am the only user on my system so I almost never include security. Of course, I am deffinitly no master. I am open to your suggestions.

Sure.

To quote from the original post:

empty-trash - empties the trash bin

sudo rm -rf ~/.local/share/Trash/
mkdir ~/.local/share/Trash/
mkdir ~/.local/share/Trash/info
mkdir ~/.local/share/Trash/files

use:
empty-trash

This can be reduced to a single line:

rm -rf ~/.local/share/Trash

Regarding the use of "sudo", in the context of Trash removal, it is OK to use, but if you don't need the higher privileges, there is no point asking for them. The user should own all the files in the Trash folder (which is located in their own home folder), so "sudo" is not needed.

[dennismoore1]

very very true
however,
are you sure that when you delete a file the trash bin directories are recreated on their own?

[dennismoore1]

oh yes
it is
i just tested it
ill make an amendment
thank you

[bodhi.zazen]

good start, but can be simplified.

Take a look at pipes and redirects.

cat "$1" | sort > "$1"

*Note also using quotes " " allows file names with spaces

Also you will like this one

look at man mkdir

mkdir -p ~/.local/share/Trash/{info,files}

You should likely use /usr/local/bin for scripts (rather then sbin)

Most of these "one liners" can be set as an alias or function in ~/.bashrc

[DGortze380]

Use this one twice a day.

Just one a threw together for myself so there isn't much error checking or anything. Simple enough to modify for other systems, PM me with any questions. Could automatically check for a mounted drive easily enough, I just ask the user to remind myself to check, don't need the script to check for me.

#!/bin/ksh

# The backup created is of /Users (all users home and shared directories) not
# system files. Add any other directories below.

# This script will sync the backup located on /Volumes/My_External using
# the rsync command with options archive and one file system.

begin=no
run=0

while [[ $run -eq 0 ]] do

echo "Is the drive mounted and ready for the backup to begin?" 
echo "(yes|no|exit)"
read begin

if [[ $begin = "yes" ]]
then
run=1
sudo rsync -ax --delete /Users /Volumes/My_External
# -a  archive mode (recursive, links, perms, times, groups, owner, devices)
# -x  one file system

# ADD ADDITIONAL DIRECTORIES HERE USING ABOVE RSYNC COMMAND

else
if [[ $begin = "no" ]]
then
clear
echo "Please Connect and Mount the drive and type yes to continue." 
else
if [[ $begin = "exit" ]]
then
run=1
clear
else
echo "Please enter valid input (yes|no|exit)"
fi
fi
fi
done